*{margin:0;padding:0;box-sizing:border-box;font-family:Arial,"Microsoft YaHei",sans-serif}
body{background:#f5f7fa;color:#333;line-height:1.7}
.lang-bar{background:#0066cc;color:#fff;padding:10px 0;text-align:center}
.lang-btn{color:#fff;margin:0 12px;text-decoration:none;font-weight:700}
.lang-btn.active{border-bottom:2px solid #fff}

.navbar{display:flex;justify-content:space-between;align-items:center;padding:18px 30px;background:#fff;box-shadow:0 2px 10px rgba(0,0,0,.05);position:sticky;top:0;z-index:999}
/* 文字logo删除，改用图片logo */
.logo{
    width: 160px;
    height: auto;
    line-height: 1;
}
.logo img{
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
}
.nav-menu{list-style:none;display:flex;gap:5px}
.nav-menu li{position:relative;padding:8px 10px}
.nav-menu a{color:#333;text-decoration:none;font-weight:500;transition:all 0.3s ease;display:inline-block}
.nav-menu a:hover{color:#0066cc;transform:translateY(-2px)}
.nav-menu a.active{color:#0066cc}

.submenu{position:absolute;top:100%;left:0;min-width:180px;background:#fff;box-shadow:0 4px 12px rgba(0,0,0,0.1);border-radius:6px;overflow:hidden;display:none;z-index:99}
.submenu li{padding:0}
.submenu a{display:block;padding:10px 16px;color:#333;font-weight:normal}
.submenu a:hover{background:#f0f7ff}
.nav-menu li:hover .submenu{display:block;animation:fadeIn 0.3s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

.banner{height:520px;overflow:hidden;position:relative}
.slide{display:none;width:100%;height:100%}
.slide.active{display:block}
.slide img{width:100%;height:100%;object-fit:cover}
.banner-text{
  position:absolute;
  top:50%;
  left:50%;
  transform:translate(-50%, -50%);
  color:#fff;
  text-shadow:0 2px 5px rgba(0,0,0,0.5);
  text-align:center;
  width:80%;
}

.page-banner{height:280px;overflow:hidden;position:relative}
.page-banner img{width:100%;height:100%;object-fit:cover}
.page-title{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:#fff;text-shadow:0 2px 5px rgba(0,0,0,0.4)}
.page-title h1{font-size:34px}

.section{padding:60px 20px;text-align:center}
.container{max-width:1100px;margin:0 auto}
.services-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px;max-width:1000px;margin:0 auto}
.service-item{background:#fff;padding:30px;border-radius:12px;box-shadow:0 3px 10px rgba(0,0,0,.05)}
.service-item img{width:100%;height:200px;object-fit:cover;border-radius:8px;margin-bottom:16px}

.btn{display:inline-block;padding:12px 30px;background:#0066cc;color:#fff;border-radius:6px;text-decoration:none;font-weight:700;margin-top:16px;transition:all 0.3s ease}
.btn:hover{background:#0052aa;transform:translateY(-2px)}
.btn-line{background:transparent;color:#0066cc;border:2px solid #0066cc}

footer{background:#222;color:#fff;text-align:center;padding:26px;margin-top:40px}

.section-about{
  padding:60px 20px;
  background:#f9fbfc;
}
.about-wrap{
  max-width:1100px;
  margin:0 auto;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:40px;
  align-items:center;
}
.about-img img{
  width:100%;
  border-radius:10px;
  box-shadow:0 5px 15px rgba(0,0,0,0.08);
}
.section-pain,.section-solution,.section-case,.section-why{
  padding:60px 20px;
  max-width:1100px;
  margin:0 auto;
}
.section-pain{background:#fff;}
.section-solution{background:#f9fbfc;}
.section-case{background:#fff;}
.section-why{background:#f9fbfc;}
.sec-title{
  font-size:28px;
  text-align:center;
  margin-bottom:40px;
  color:#222;
}
.pain-list,.solution-list,.why-list{
  line-height:2;
  font-size:16px;
  margin-bottom:30px;
  text-align:center;
  list-style:none;
}
.pain-list li,.solution-list li,.why-list li{
  margin-bottom:12px;
}
.case-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:25px;
  margin-bottom:30px;
}
.case-item{
  text-align:center;
}
.case-item img{
  width:100%;
  height:220px;
  object-fit:cover;
  border-radius:8px;
  margin-bottom:15px;
  box-shadow:0 3px 10px rgba(0,0,0,0.08);
}
.btn-wrap{
  text-align:center;
  margin-top:20px;
}

/* 以下是你新增模块的样式 */
.section-process{
  padding:60px 20px;
  background:#fff;
  text-align:center;
  max-width:1100px;
  margin:0 auto;
}
.process-steps{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  font-size:18px;
  font-weight:bold;
  margin-bottom:20px;
}
.step{
  background:#0066cc;
  color:#fff;
  padding:8px 16px;
  border-radius:6px;
}
.arrow{
  color:#0066cc;
  font-size:20px;
}
.process-tip{
  font-size:17px;
  color:#0066cc;
  font-weight:bold;
}

.section-crystal{
  padding:60px 20px;
  background:#f9fbfc;
}
.crystal-box{
  max-width:1100px;
  margin:0 auto;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:40px;
  align-items:center;
}
.crystal-left img{
  width:100%;
  border-radius:10px;
  box-shadow:0 5px 15px rgba(0,0,0,0.08);
}
.crystal-right h2{
  font-size:26px;
  margin-bottom:15px;
}
.crystal-right p{
  font-size:17px;
  line-height:1.8;
}

.section-cta{
  padding:80px 20px;
  background:#0066cc;
  color:#fff;
  text-align:center;
}
.section-cta h2{
  font-size:30px;
  margin-bottom:15px;
}
.section-cta p{
  font-size:17px;
  margin-bottom:20px;
}
.cta-use{
  font-size:16px;
  line-height:1.8;
  margin-bottom:30px;
}
.cta-btns{
  display:flex;
  justify-content:center;
  gap:20px;
  flex-wrap:wrap;
}
.cta-btns .btn{
  background:#fff;
  color:#0066cc;
}
.cta-btns .btn-line{
  background:transparent;
  color:#fff;
  border-color:#fff;
}